RFC 1947 (rfc1947) - Page 1 of 7


Greek Character Encoding for Electronic Mail Messages



Alternative Format: Original Text Document



Network Working Group                                       D. Spinellis
Request for Comments: 1947                                     SENA S.A.
Category: Informational                                         May 1996


         Greek Character Encoding for Electronic Mail Messages

Status of This Memo

   This memo provides information for the Internet community.  This memo
   does not specify an Internet standard of any kind.  Distribution of
   this memo is unlimited.

Overview and Rational

   This document describes a standard encoding for electronic mail
   [RFC 822] containing Greek text and provides implementation guide-
   lines.  The standard is based on MIME [RFC 1521] and the ISO 8859-7
   character encoding.  Although the implementation of this standard is
   straightforward several non-standard but "functional" - though
   unlikely to inter-operate - alternatives are in common use.  For this
   reason we highlight common implementation and mail user agent setup
   errors.

   Description

   In order to transfer Greek text via electronic mail the text is first
   translated into the ISO 8859-7 character set, and then encoded using
   either the Base64 (preferable for text that is mainly Greek) or the
   Quoted-Printable (justifiable in cases where some Greek words appear
   inside predominately Latin text) method, as defined in MIME.

   The following table provides most common Greek encodings (see also
   [RFC 1345]):

   0646 37 M7 51 MC 23 69 LG L1 G7 GO GC 28 97 Description
   ---- -- -- -- -- -- -- -- -- -- -- -- -- -- -----------
   0386 ea a2 86 cd 71 86                   b6 Capital alpha with acute
   0388 eb b8 8d ce 72 8d                   b8 Capital epsilon with
                                               acute
   0389 ec b9 8f d7 73 8f                   b9 Capital eta with acute
   038a ed ba 90 d8 75 90                   ba Capital iota with acute
   038c ee bc 92 d9 76 92                   bc Capital omicron with
                                               acute
   038e ef be 95 da 77 95                   be Capital upsilon with
                                               acute
   038f f0 bf 98 df 78 98                   bf Capital omega with acute
   0390    c0 a1 fd    a1                   c0 Small iota with acute and



Spinellis                    Informational